摘要
目的研究脊髓室管膜瘤的MR影像特征。方法回顾性分析经手术病理证实的15例脊髓室管膜瘤的临床及磁共振表现。结果 15例脊髓室管膜瘤中,12例位于颈髓,1例位于胸髓,2例位于腰髓。全部肿瘤呈中心性生长,平均累及2.1个椎体单位。13例肿瘤边界清。平扫T1WI大部分肿瘤呈等信号或混杂信号,在T2WI大部分呈高信号或混杂信号。10例肿瘤实质头端或尾端反应性囊变,4例瘤内囊变,2例肿瘤内出血,2例肿瘤可见"帽征"。7例肿瘤明显均匀强化。结论肿瘤中心性生长,边界清、明显均匀强化是室管膜瘤与其它脊髓肿瘤的主要鉴别依据。
Objective To evalute the magnetic resonance （MR） imaging features of intramedullary ependymomas. Meth ods The clinical and MR imaging materials of 15 patients with spinal cord ependymomas confirmed by operation and pa thology were reviewed. Results Among 15 cases of ependymomas, 12 were cervical and 1 thoracic, and 2 lumbar. All tumors were located centrically in the spinal cord, with a mean length of 2.1 along the neuraxis. Clear tumor margins were seen in 13 ependymomas. Most of tumors were isointensity or mixed intensity on T1WI and hyperintensity or mixed inten-sity on T2 WI. Rostral and/or caudal cysts were seen in 10 ependymomas, intratumoral cysts were found in 4 tumors. In- tratumoral hemorrhage was shown in 2 tumors. ＂Cap sign＂ was seen in 2 tumors. 7 of 15 ependymomas had uniform con trast enhancement. Conclusion Central locations, clear tumor margins, and more uniform enhancement can help differen tiate ependymomas from other intramedullary spinal cord tumors.
出处
《医学影像学杂志》
2013年第9期1358-1361,共4页
Journal of Medical Imaging
关键词
室管膜瘤
磁共振成像
Ependymoma Magnetic resonance imaging Spinal cord
